PCBs for DIY clone 2-band Preamps - Page 12

MKD · #**221** 01-16-2013, 01:13 AM

are any boards from this batch still available? cheers

Gideon352 · #**222** 01-18-2013, 09:00 PM

Big +1!!!

brumshine · #**223** 01-26-2013, 06:07 AM

I'm having a problem with my pre. I plan on working on it all day till I get if fixed though, fingers crossed. I get no sound with all knobs set at 50%, if I crank everything except treble to 100% st=ill no sound. As soon as I get the treble past 80 or 90% it sort of clicks on and I get sound but my bass knob does nothing. Any suggestions are appreciated!

Prostheta · #**224** 01-26-2013, 09:01 AM

Still going strong! I fitted the pre-amp in the bass I made and she sounds great. I think I still want to play around with values a little to further finesse it all however.

On that basis, I know that there are plenty of mods and proposed changes to the original values as printed on the PCB. Does anybody want to write a short synopsis on component value changes (and indeed, component types) since they are spread over many many pages both here and on freestompboxes? I suspect that David would be the authority here.

I have a second bass I want to fit my other board into, however it is a dual pickup 5-string. From what I can remember, this pre-amp does not have high input impedance and would benefit greatly from a buffered input subsequent to say, a blend pot.

On that basis, would there be much interest in me designing a simple piggy-back board for the pre-amp? Essentially, one that sits straight into the 8-pin socket with either a dual op-amp or 1x SOIC LM4250 and 1x SOIC OPA241? Given the size of an SMD board this shouldn't raise the overall height by any appreciable amount. Just an idea I was throwing around.

BassLife77 · #**225** 01-26-2013, 10:43 AM

Quote:

Originally Posted by brumshine

I'm having a problem with my pre. I plan on working on it all day till I get if fixed though, fingers crossed. I get no sound with all knobs set at 50%, if I crank everything except treble to 100% st=ill no sound. As soon as I get the treble past 80 or 90% it sort of clicks on and I get sound but my bass knob does nothing. Any suggestions are appreciated!

you have a multimeter? what works for me is to check all soldering points and wires for continuity. for instance touch a leg on the opamp to the next point on the board then check that point to the next one. also use a magnifying glass to check for cold and bridged solder joints

sei24bass · #**226** 02-04-2013, 09:12 AM

PM for some boards please Uncle Fluffy!

Tedward · #**227** 02-04-2013, 07:17 PM

I PM'd for some boards, too.

Tedward

MKD · #**228** 02-04-2013, 08:48 PM

Same. is he still alive? PM me Uncle Fluffy. Keeeeen.

UncleFluffy · #**229** 02-05-2013, 12:50 PM

Hi folks

I'm sorry that I can't always get to board PMs as fast as I'd like. This is deliberately not a money-making exercise for me. Between boards, shipping, paying for this thread (this post cost me $15!) and all the other little costs I roughly break even at "a beer a board". Which is intentional, and good, but it does mean that paying the bills has to take priority. I don't want to take anyone's money when I'm not able to ship boards within a week of doing so.

There's about 25 board PMs still in my inbox right now, and I'm working through them as time permits. Thanks for the nudges, but at least one person is shouting out in the thread less than 24 hours after sending a PM.

yeraym · #**230** 02-05-2013, 03:43 PM

Hi UncleFluffy, one of those PM should be mine but I don't need the boards any more. I got some made from the eagle files you posted.

I haven't tested them yet, I need to buy the parts and some tools as this is my first build, I hope to be able to report back soon.

I still want to buy you some beers

.

UncleFluffy · #**231** 02-05-2013, 03:48 PM

Quote:

Originally Posted by yeraym

I still want to buy you some beers

.

Nah, don't worry about the beer. Seeing people take this stuff and make something with it is the most fun part. Nice boards!

Musiclogic · #**232** 02-05-2013, 04:51 PM

Uncle Fluffy is a great guy, has been very cool about this since it started

johnboy65 · #**233** 02-08-2013, 08:41 AM

Does anyone have a mouser parts list for this? I've looked through the thread and have only found a digikey pic that uncle fluffy posted a while back.
Any help is appreciated!

Gideon352 · #**234** 02-11-2013, 11:17 AM

Huge thanks to Uncle Fluffy! Fun Project!!!

Gideon

daveze · #**235** 02-11-2013, 07:48 PM

Boards arrived yesterday, they are really tidy and much smaller than I expected. Next stop: Mouser/Digikey/Element 14...

ldervish · #**236** 02-12-2013, 06:41 AM

Quote:

Originally Posted by johnboy65

Does anyone have a mouser parts list for this? I've looked through the thread and have only found a digikey pic that uncle fluffy posted a while back.
Any help is appreciated!

Somewhere in here (near the beginning?) is a reference to the original thread where the pcb's were developed. I think there is a parts list there.

Tedward · #**237** 02-13-2013, 07:39 PM

Got my boards today! Thanks UncleFluffy!

I'm ordering parts from Digikey and Mouser. Digikey has a minimum order of 5200 sockets.
What is the part# for Mouser's IC socket ?

Tedward

arginator · #**238** 02-13-2013, 08:06 PM

Yep, got mine too. Thanks Uncle Fluffy!

domdec314 · #**239** 02-14-2013, 03:28 PM

Quote:

Originally Posted by Tedward

Got my boards today! Thanks UncleFluffy!

I'm ordering parts from Digikey and Mouser. Digikey has a minimum order of 5200 sockets.
What is the part# for Mouser's IC socket ?

Tedward

These are the ones I always use:

http://www.mouser.com/Search/Product...y571-1825093-2

Ignore the picture, it's an 8 pin socket.

EDIT: Here's the exact same one on DigiKey:

http://www.digikey.com/product-detai...2361-ND/813470

Tedward · #**240** 02-20-2013, 07:36 PM

Got the rest of the parts from Mouser and I ordered the wrong LM4350's too small.

Is this the right one from Digi-Key LM4250CN/NOPB-ND?

Tedward